Apparatus for use in raising wrecks.



No. 710,869. Patented Oct. 7, 1902.

T. JOHNSON & C. JACOBSON.

APPARATUS FOR USE IN RAISING WRECKS.

(Application filed June 26, 1901.) v

(No Model.)

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THEODOR JOHNSON AND CORNELIUS JAOOBSON, OF OHINOOK, \VASHING- TON,ASSIGNORS OF ONE-THIRD TO O. J. SUND, OF CHINOOK, WASH- INGTON.

APPARATUS FOR USE IN RAISING WRECKS.

tiiilClFXGATION forming part of Letters Patent No. 710,869, datedOctober '7, 1902.

Application filed June 26, 1901.

To all ll/fito'nz it may concern:

Be it known that we, 'lHEoDon Jonnsox and Connnnms Jnoosson, citizens ofthe United States, residing at Chinook, in the county of Pacific andState of .Vashingtou, have invented certain new and useful lmprovemeutsin 1lpparatus for Use in Raising Wrecks, of which thefollowing is aspecification.

Our invention is an improvement in that class of apparatus employed forraising wrecks in which hoisting devices are applied to some form offloat and chains are connected with such devices and adapted to bepassed around the submerged Wreck.

Our invention is embodied in a simple and inexpensive form of apparatuswhich maybe easily manipulated, which is adapted to maintain itsposition upon the float, and which is provided with two screws at eachend, the same being adapted for attachment of chains and operating inthe manner hereinafter described.

In the drawings, Figure I shows our invention as in use with a singlefloat. Fig. 2 is a top plan view of the float. Fig. 3 is a detail endview showing the cross-beams and the screw-supporting beam thereon andillustrating how the screws may be alternately connected to thelifting-chain, as will be more fully described hereinafter. Fig. 4 is adetail view of a section of the chain, and Fig. 5 shows a doublearrangement of floats.

In carrying out our invention we employ floats designed to be arrangedadjacent to the Wreck to be raised and having supports for screws whichmay be operated to exert a lifting force on chains passed beneath orsuitably connected with the submerged wreck.

In the construction shown the floats A are in the form of boat-hulls andare provided with the transversely-extended beams B and 13, arranged inpairs and spaced apart and suitably secured and extended at their endsbeyond the sides of the float and supporting on such extensions thebeams O, which extend between and rigidly connect the extended ends ofthe beams 13 and are provided between the said beams B with openings Cfor the passage of the screws D. Upon the beams Serial No. 66,145. (Nomodel.)

C are provided steel plates E, having openings E in alinement with theopenings and adapted to permit the passage of the screws D, whichreceive the nuts F, threaded on the screws and bearing above the steelplates E, as shown These nuts are turned by wrenches of steel providedwith ratchets, as shown, so the wrench can be operated from the deck ofthe float, as desired. The screws are provided at their lower ends will]eyes, as shown. It will be noticed that each of the beams C supports twoof the screws I), which extend side by side, one of the screws operatingto hold the chain when the other screw has been run out until such screwhas been readjusted to position for use, or manifestly the screws maybeused alternately, as desired. In practice we make the screws six feetlong, three inches in diameter, and -with one-half-inch flat thread.

The chains G are preferably truss-chains, as shown, suitablyproportioned to the screws, and in practice may be passed from thescrews on one side of the float down under the wreck and then up andsecured to the screws on the opposite side of the float, or the floatsmay be arranged on opposite sides of the wreck and be used jointly forraising the same. The

screws are shown as provided at their lower ends with openings (Z forthe connection of the couplings or clevises H, to which the chains maybe secured in any suitable manner.

By extending the transverse beams B from side to side of the hull andbeyond its opposite sides the lifting strain may be so distributed as tokeep the hull or float on an even keel, and thus facilitate theoperation of the invention in rough Water. The transverse beams alsodistribute the strain upon the hull or float, and thus avoid injurythereto.

In the double arrangement of floats shown in Fig. 5 the chains run fromthe outside of one float to the inside of the other float, and thussupport the wreck between the two floats, so the latter can be kept onan even keel, as 5 will beunderstood from Fig. 5.

In the operation of the invention and in the shifting of thelifting-chains from one screw 'to the other While supporting the weightof a wreck it will be understood, as best shown 10o in Fig. 3, that whenone of the screws has been connected with the lifting-chain and adjustedupwardly to its full extent the adjacent screw having meanwhile been rundown can be connected at its lower end with the lifting-chain undertension and then operated until its lifting action on the chain willrelieve the other screw of the stress of the chain, when the first screwcan be detached from the chain and the stress of the latter be borne bythe second screw, after which the first screw can be adjusted downwardto position for connection with the lifting-chain when the second chainhas been operated to its full extent to raise the wreck, as will beunderstood from the preceding description.

Having thus described our invention, what we claim, and desire to secureby Letters Patent, is

1. An apparatus for use in raising wrecks, comprising a float, two pairsof beams extended transversely across the same and projecting beyond theopposite sides thereof, crossbeams supported upon the extended ends ofeach pair of transverse beams, and provided with two vertical openings,metallic plates upon the upper sides of said beams and having openingsin alinement with those in the respective beams, screws provided witheyes and passed through the said openings, nuts applied on said screwsabove the metal plates, and chains adapted to be connected alternatelywith the lower ends of said screws, substantially as set forth.

2. An apparatus for use in raising wrecks, consisting in connection witha float, of the pair of screws arranged in close proximity whereby theymay be alternately connected with the lifting-chain and one screw may beoperated to support the chain while the other screw is being readjustedto operative position, and supports for said screws carried by thefloat, substantially as set forth.

3. The herein-described apparatus for use in raising wrecks consistingof a float, two pairs of beams extended transversely across the same,said pairs being spaced apart and the beams of each pair projectingbeyond the opposite sides of the float, cross-beams supported upon theprojecting ends of the pairs of beams and arranged outside the line ofthe sides of the float, each cross-beam being provided with a pair ofvertical openings for the screws, and the pairs of screws operating insaid openings, the screws of each cross-beam being arranged in closeproximity whereby either screw may be connected to the chain,substantially as and for the purpose set forth.

THEODOR JOHNSON. CORNELIUS JACOBSON.

Witnesses:

GEO. HIBBERT, J. E. DALTON.

